OpenAI Codex CLI
Frontier reasoning in the terminal
OpenAI Codex CLI launched on April 17, 2025 with 192 votes, #189 of 7,818 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
For developers who live in the terminal and want ChatGPT‑level reasoning plus the power to actually run code, manipulate files, and iterate – all under version control. In short, it’s chat‑driven development that understands and executes your repo.
Lightweight coding agent that runs in your terminal - openai/codex
Does a similar job
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Gemini CLI2025 · blog.google · ▲224A simple weekend project, to check if chat conversation could be used on CLI. Uses Google Gemini's gemini-2.0-flash model. Configs will make it nicer, but I wanted to keep it simple to test and launch for now. I can add things for you :) Please give it a try!




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